Solve.On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the student got 37 questions correct. What was the percent of increase?
A. 52%
B. 32.4%
C. 48%
D. 12%
Answer: C
Mathematics
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Fill in the missing value.753,700 m2 = km2
A. 75.37 B. 7.537 C. 7537 D. 0.7537
Mathematics
Solve the problem.A chemist needs to mix a 20% acid solution with a 70% acid solution to obtain 8 liters of a 50% acid solution. How many liters of each of the solutions must be used?
A. 1.6 L of the 20% solution; 6.4 L of the 70% solution B. 2.4 L of the 20% solution; 5.6 L of the 70% solution C. 4 L of the 20% solution; 4 L of the 70% solution D. 3.2 L of the 20% solution; 4.8 L of the 70% solution
Mathematics
Multiply.4 ? 6000
A. 24,000 B. 10,000 C. 240,000 D. 2400
Mathematics
Are these fractions equal?
and 
A. No B. Yes
Mathematics